Xerox Phaser 7700 Service Manual page 212

7.
Undo the harness retainer. Disconnect the wiring harness to the relay board
connector P300 and the front panel cable to P564.
8.
Remove the two mounting screws towards printer rear, but
two mounting screws towards the printer front.
Note
The two screws toward the printer front serve as a guide for
reinstallation.
9.
Lift and tilt the cage assembly to release it from the engine control interface
board connector below the cage assembly and remove the assembly.
Replacement
Note Before re-installing the assembly, widen the gap in each of the two
white nylon retainers to ensure that they successfully engage the
interface board bracket. Mis-alignment prevents a good
connection to the interface board.
1. Tilt and insert the engine control board assembly under the two loosened
screws.
2. Carefully lower the assembly onto the engine interface board connector.
3. Push lightly into the center of the assembly to ensure the assembly is fully
seated.If board is reasonably stable, the board is properly placed.
4. Continue installation by reversing the removal procedures.
Note Ensure that all connections are firmly seated, pay special
attention to the laser unit connections on the printers right side.
Note After replacement of the Engine Control Board, perform the Reset
Engine NVRAM procedure on page 6-136.
Service Quick Reference Guide - Removal & Replacement Procedures
only loosen
the
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